#cloud-config
hostname: server
manage_etc_hosts: false

users:
  - name: ubuntu
    gecos: ubuntu
    sudo: ALL=(ALL) NOPASSWD:ALL
    lock_passwd: false
    ssh_pwauth: true
    shell: /bin/bash

ssh_pwauth: true
chpasswd:
  list: |
    ubuntu:ubuntu
  expire: false

growpart:
  mode: auto
  devices: ["/"]

package_update: true
package_upgrade: false
packages:
  - tftpd-hpa
  - nginx
  - caddy

write_files:
  - path: /etc/nginx/nginx.conf
    owner: root:root
    permissions: "0644"
    encoding: b64
    content: ${nginx_conf}
  - path: /etc/default/tftpd-hpa
    owner: root:root
    permissions: "0644"
    encoding: b64
    content: ${tftpd_conf}
  - path: /etc/caddy/Caddyfile
    owner: root:root
    permissions: "0644"
    encoding: b64
    content: ${caddy_conf}
  - path: /etc/hosts
    append: true
    encoding: b64
    content: ${hosts_file}
  - path: /etc/networkd-dispatcher/routable.d/10-disable-offloading
    owner: root:root
    permissions: "0755"
    content: |
      #!/bin/bash
      for IF in $(networkctl list --no-legend | awk '/ routable /{print $2}'); do
        /usr/sbin/ethtool -K "$IF" \
          rx off tx off sg off tso off ufo off gso off gro off lro off \
          ntuple off rxhash off rx-gro-hw off || true
      done
  - path: /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg
    permissions: '0644'
    content: |
      network: {config: disabled}
  - path: /etc/netplan/01-static.yaml
    owner: root:root
    permissions: '0644'
    content: |
      network:
        version: 2
        renderer: networkd
        ethernets:
          enp1s0:
            dhcp4: false
            addresses: [${ip}]
            gateway4: ${gateway}
            nameservers:
              addresses: ${nameservers}

modules:
  - tcp_bbr
  - sch_netem

runcmd:
  - rm -f /etc/netplan/50-cloud-init.yaml
  - netplan generate && netplan apply

  - |
    dd if=/dev/random of=/var/www/1MB.file bs=1024K count=1
    dd if=/dev/random of=/var/www/10MB.file bs=1024K count=10
    dd if=/dev/random of=/var/www/100MB.file bs=1024K count=100

  - systemctl enable nginx caddy tftpd-hpa && systemctl restart nginx caddy tftpd-hpa